Sum of digits program in C++ Notes+Coding by Digitalise Data

Sum of digits program in C++

We can write the sum of digits program in C++ language by the help of loop and mathematical operation only.

Sum of digits algorithm

To get sum of each digit by C++ program, use the following algorithm:

• Step 1: Get number by user
• Step 2: Get the modulus/remainder of the number
• Step 3: sum the remainder of the number
• Step 4: Divide the number by 10
• Step 5: Repeat the step 2 while number is greater than 0.

Let's see the sum of digits program in C++.

1. #include <iostream.h>
2. #include <conio.h>   
3. void main()  
4. {  
5. int n,sum=0,m;    
6. cout<<"Enter a number: ";    
7. cin>>n;    
8. while(n>0)    
9. {    
10. m=n%10;    
11. sum=sum+m;    
12. n=n/10;    
13. }    
14. cout<<"Sum is= "<<sum<<endl;    
15. getch();  
16. }  

Output

Enter a number: 23  
 Sum is= 5

Enter a number: 624        

Sum is= 12